Spreading and Isolating Multiple Stacked Cards using Absorptive Hole Array

A new approach to the separation of multiple stacked cards is presented. Separation of multiple stacked cards is a key operation in many mechatronic devices such as copy machines and cash dispensers. Separation must be performed in small operation area despite of water and oil on the cards. In this article, we will develop a new system to separate multiple stacked cards using an array of absorptive holes. First, we will show the principle of the separation of multiple stacked cards. Second, we will develop a prototype of card separation system using an array of absorptive holes. Next, we will show experimental results of card separation and will evaluate the performance of the prototype. Finally, we will analyze the separating process of stacked cards in a quasi-static manner to determine appropriate absorptive pressure.